Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 Black
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Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works L89 AR-15 upper receiver group is a complete assembly designed specifically for the .300 Blackout caliber, featuring an 8.5-inch barrel that balances compactness with effective velocity. Its mid-length gas system ensures reliable cycling and reduced recoil, while the 1:7 twist rate stabilizes a variety of bullet weights, enhancing accuracy and performance. This upper is commonly found in short-barreled builds, making it ideal for close-quarters engagements or compact setups.
Specifications
Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 Black
Available Merchants(4)
Prices checked
Price Alert
Price and stock
Availability is good for the Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 Black: it was in stock at one retailer or another nearly every day in September 2026, and today 3 of the 4 retailers we track have it in stock. Prices barely moved in September 2026, holding around $950, so there haven't been real sales lately. Buying today, the lowest price is $945.36 at KY Gun Company, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
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